Mistress Kristina and her friend mistress Maika wanted to punish this guy for being a bully. They had been bullied when they were in school and they did not want anyone else to undergo what they went through. So they lured the bully to their house and instead of the fun he expected to have, they tortured him and made him lick their smelly socks and sweaty feet and made him promise to stop being a bully.
Lady Steffi enjoys trampling losers. If anyone is a loser to her, she has to trample him. This new employee did not meet his targets and she had to make sure he was well motivated. Only that her motivation involved her sneakers and some pain. She crushed the employee's face using her sneakers and made sure he was in lots of pain and associated that pain with failing to meet his targets.
Mistress Akara loves her converse sneakers because they are comfortable. She loves to wear them wherever she goes and sometimes she gets her feet smelly. Whenever that happens, she usually takes it as a sign that the universe wants her to humiliate someone. So she finds a random loser or slave and she forces him or her to lick and smell her shoes. She likes the sweat licked and the stinky shoes smelled.